Hilarious and I do mean hilarious animated film put out by the United States Navy to illustrate to, I assume, it's personnel the meaning, purpose and necessity of calibration of testing equipment. The theory may or may not be old hat to you, but the film itself is a HOOT!
Sailing ships, cannon, an old cash register/pinball machine and a great jaunty nautical soundtrack (amongst other things!!) are used to illustrate how calibration happens and why. Significantly older than 1994 (Ending credit says 1966), this wouldn't look out of place in Saturday morning cartoons and should definitely be watched!!